Dan Geer is world-renowned cyber security researcher. He's Chief Information Security Officer at In-Q-Tel, a non-profit venture capital firm. Hid company invests in technology to support the CIA. He's knows his shit. And he uses a pager instead of a smartphone.

In 1999, 45 million Americans had pagers. They were an equal-opportunity technology, owned by drug dealers, whores, doctors and CEOs—and new college students whose parents couldn't drop the leash. At least there was the code.